Process for the manufacture of reinforced glass.



A. BARDIN. PROCESS FOR THE MANUFACTURE 0F REINFORCED GLASS.

APPLICATION FILED JULY 16, i913. v

Patented May 29, 1917.

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IN VE N T05*` ATTORNES/ s'rnrns Pn NT orrren,

ABEL IBABDIN, OF PARIS, FRANCE.

`PBOGESS FOR ,THE MANUFACTURE OIE' REINFORCE) GLASS.

. 'To all 'wltom z' may concern:

Be it known that I, ABEL BARBIN, a citizen' of the French Republic, and residing at No. 11bis Rue Jean Nicot, Paris, France, apothecarys assistant, have invented certain new and useful Improvements in and Relating to Processes for' the vManufacture of Reinforced Glass, of whichl the folloyving is a complete specification,

'This invention has Lfor its object to proC vide an il'nproved process for the manufacturgI ofreinforced glass, and it consists in covering glass articles for instance window panes, gnirrors, plate glass or other articles, whether plain or not with a reinforcing medium in such a manner as yto retain the glass ingmanner: Y

In the accompanying drawing tion of a paneof applied thereto; v.

2 isa view of a window sash containing a reinforced pane.'

' process is glass having the reinforce The glasstl'to be reinforced washed carefullyfor example by tHe aid of iron y chromic oxid in water to destroy all jtraces of grease. The glass is then rinsed in 'running -'water, and-then driedr.

-oxid in suspension in water. Then: the glass is 'dipped into a 20 Iper cent. solution 'of The glass so cleaned then receives a'transparent, adhesive coating, which 'is' 'preferably ha weaksolution of gelatin projected -on tone of the glass faces in such a manneras to flm 2,hv.11g the thilsless ibi about ,Q3 of produce thereon an extremely thin a mllllmeter,

Specification of Letters Patent.. i Applnationmea July is, 191s. serial No. 77

impervious,

Figure 1 isfa perspective .view of a porcarried out in the follow.-`

Patented May 29, 1917.

When the gelatin film is dry a transparent `reinforcing solution can be poured over the lnsb ut preferably the gelatin lm is first coated with a solution intended to improve the adhesion of the reinforcing solution and consists of one or two per cent. of collodion or celluloid 'or 'simply nitro-cellulose -dissolved in ethyl formate. When this latter coating 3 hasvsolidified it may happen that a haze is produced by said coating. The haze is made to'clisappear by the `application ofthe following solution, also obtained by vaporization:

Celluloid 2 to 3 grams. Acetone 30 cubic centimeters. Ether l` ..r 30 Amyl acetate 30 Amyl alc0hol 1.0 1

The above coating 4 is allowed to dry, and then a Celluloid varnishing and rotectin'g coating 5 'is poured on.` his pouring on ay be effected for example Iby furnishing t e edges of the glass with molding strips or with paste'board strips. To obtain good results, the following solution can be poured on, at the proportion of one liter .`Ether 30 cubiclcentimeters.

Acetone 30 Amyl 'acetate.. 30 l Amyl alcohol" ,-20 E A`"The following `solution is' equally suitable:--'`

j In each. of these solutions, the 'quantity of celluloid given as example, may vary,vesper ciallyaccording tothe quality of the materials employed. After the plates areper-e fectly dry, their edgesareovered with a' 'suitable impervious varnish to prevent the actionof steam, water, or external agents. Biehromated gelatinI or other'suitzibleprod- .uct may. alsobe for 111.118 purpose:

The various operations describedinay be effected by pouring, aided if necessary^ by using a suitable spreading machine.

For the utilization of the glass plates reinforced according to theprocess described,

. two of these plates 6 and 7 are placed in a into the grooves at the moment of xing the e plate, in such a manner as to edec't at the same time the insulation of the protecting coating against external influences. A suitable substance, for example artificial rubber may also be injected into the space between the two plates so joined, in order to more surely prevent the edges'of the reinforce-l ment from peeling olf under external influences, and to prevent the introduction of dust or bodies of any kind likely to diminish the transparency of the whole.

Between the two plates of the same frame letters or designs of any nature may be arranged to form an advertisement` and the whole mayform a panel or stained glass window by suitably coloring the, gelatin or celluloid coating.

The coloring may be effected by coloring the solutions before using same. A

The one of the solutions enumerated above may also be replaced byother suitable solutions in order to obtain for example solutions of gelatin 'orr viscous solutions in the celluloid dissolventsfin carbon disulfid, or in a hydrocarbon. 'Acetates of cellulose may also be used, for example those soluble .-articles.

in acetic ether with if necessary an addition"- of acetic acid or of acetates soluble in hydrocarbonf j In certain cases it suffices to soak the gelatined glass plates in a bath ofethyl formate ori acetic acid. The invention forcementof glass or fragile substances for all purposes for example for mirrors, Hat

-or curved plate glass window panes or other' What lclaim is:

1. rlhe herein-described process of making reinforced glass which consists in coating the glass surface with a transparent, adhesive medium, a transparent, reinforcing Y medium consisting of celluloid, and nally coating the whole with av transparent protecting medium.. f

2.' The herein described process of making reinforced' glass which consists in coating.

the 'glass surface with layers of transparent,

n covering the gelatin coating with Y is` applicable to the rein.l

masses adhesive flexible and protective mediums by pouring the same over the glass successively in the order stated, the flexible medium conl sisting of celluloid,

in solidifying produces a haze, applying a s solution for removing the haze of the adhesive coating, applying a coating of a solution of celluloid, and finally applying a protective coating.

4. The herein-described process of making reinforced glass, which consists in coating the glass with a solution of gelatin, ap- -plyingv a coating of material more adhesive vthan the gelatin consisting of a solution of a cellulose ester in ethyl formate and which in solidifying produces a haze, applying a haze-removing' solution consisting of celluloid, acetone, ether, amylacetate and amyl alcohol in the proportions set forth, applying a coating of a solution of celluloid, and -finally applying a protective coating.A

5, The herein-described process of making' a transparent reinforced glass, which consists of applying a coating of adhesive material; applying a solution of reinforcing material consisting ofl celluloid, acetone,

amyl acetate and amyl alcoholfand finally base having superlmposed layers of gelatin, celluloid, and varnish..

7. A reinforced glass consisting of a glass base having superimposed coa s of, binding material, a material more adhesive than the rst, a haze-removing material,.a reinforcing material, yand a moisture-proofprctective coating.y 8.' A reinforced glass consisting of a glass base having superimposed coats thereon and consisting successively of binding material;

a more adhesive binding material consisting.

of a weak solution of a cellulose ester 1n ethyl formate and productive of a haze in Solidifying; a haze removing material consisting of two' to three gramsl'of celluloid,

thirty cubiccentimeters Lof vacetone,'thirty cubic centimeters of ether, thirty cubic centimeters of amylacetate and ten'jcubic' Vcentimeters of alcohol; a' reinforcing material, and a -terial.

moisture-'proof protecting inaconsistingsuccessively of binding material;

tiinforcing material consisting of celluo1 reinforcedglass consisting of a glass l base having superimposed coats thereon and ing a transparent, adhesive medium over the haze removing medium, a transparent reinglass to form a film thereon, drying it,'pour .forcing medium, and finally a transparent ing over it a transparent reinforcing me-A protective medium. dium consisting oliva solution of celluloid, In testimony whereof I have hereunto 15 5 drying the same, and finally pouring over it placed my hand at Paris, France, this 3rd ar transpiarient, imlpervious protecting meday of June 1913.-

lum' an ryin t esame. n 11. The hereiii` described process of mak 'ABEL' ing reinforced glass which consists in4 pour- In the presence of two witnesses: 1o ingA over the glass surface successively al I-IAnsoN C. Coxn, transparent adhesive medium, a transparent e LOUIS COQU'LILAT. 

